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Electrospinning fabrication and characterization of poly(vinyl alcohol)/layered double hydroxides composite fibers
Author(s) -
Qin Qing,
Liu Ya,
Chen SiChong,
Zhai FeiYu,
Jing XinKe,
Wang Yu Zhong
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.36876
Subject(s) - vinyl alcohol , dispersity , materials science , nanofiber , ultimate tensile strength , electrospinning , scanning electron microscope , composite number , fiber , hydroxide , chemical engineering , lactic acid , layered double hydroxides , composite material , polymer chemistry , polymer , biology , bacteria , engineering , genetics
Nanofibers of poly(vinyl alcohol) (PVA)/layered double hydroxide (Mg‐Al LDH) composites are prepared by the electrostatic fiber spinning using water as the solvent at a high voltage of 21 kV. Either inorganic LDH carbonate (LDH‐CO 3 ) or L ‐lactic acid‐modified LDH (Lact‐LDH) is used for incorporating with PVA. Scanning electron microscopy SEM investigations on the nanofibers suggest that the average diameters of PVA/LDH composite fibers are smaller than that of neat PVA. Transmission electron microscopy (TEM) investigations indicate that the dispersity of the LDH in PVA matrix is much improved after modification with L ‐lactic acid. The mechanical properties of the PVA/LDH fibers are obviously enhanced compared to that of neat PVA. For example, the tensile stress and elongation at break of the PVA/Lact‐LDH electrospun fibrous mat with 5 wt % Lact‐LDH are 31.7 MPa and 36.7%, respectively, which are significantly higher than those of neat PVA, and also higher than those of PVA/LDH‐CO 3 owing to the better dispersity of Lact‐LDH nanoparticles. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012